Lots of them do not care about those things, like the less selective universities that practice stats-only admission. Of course, you can say that the usual stats (GPA, rank, test scores) do correlate with income (test scores more than others), resulting in an application and admission pool tipped toward wealth (relative to the pool of high school students who would be interested in the university), but that is far different from claiming that such a university cares about any individual student’s financial need when making the admission decision.